*/
struct dax_region {
int id;
- struct ida ida;
void *base;
struct kref kref;
struct device *dev;
* @region - parent region
* @dax_dev - core dax functionality
* @dev - device core
- * @id - child id in the region
* @num_resources - number of physical address extents in this device
* @res - array of physical address ranges
*/
struct dax_region *region;
struct dax_device *dax_dev;
struct device dev;
- int id;
int num_resources;
struct resource res[0];
};
dax_region->pfn_flags = pfn_flags;
kref_init(&dax_region->kref);
dax_region->id = region_id;
- ida_init(&dax_region->ida);
dax_region->align = align;
dax_region->dev = parent;
dax_region->base = addr;
struct dax_region *dax_region = dev_dax->region;
struct dax_device *dax_dev = dev_dax->dax_dev;
- if (dev_dax->id >= 0)
- ida_simple_remove(&dax_region->ida, dev_dax->id);
dax_region_put(dax_region);
put_dax(dax_dev);
kfree(dev_dax);
}
if (i < count)
- goto err_id;
-
- if (id < 0) {
- id = ida_simple_get(&dax_region->ida, 0, 0, GFP_KERNEL);
- dev_dax->id = id;
- if (id < 0) {
- rc = id;
- goto err_id;
- }
- } else {
- /* region provider owns @id lifetime */
- dev_dax->id = -1;
- }
+ goto err;
/*
* No 'host' or dax_operations since there is no access to this
dax_dev = alloc_dax(dev_dax, NULL, NULL);
if (!dax_dev) {
rc = -ENOMEM;
- goto err_dax;
+ goto err;
}
/* from here on we're committed to teardown via dax_dev_release() */
return dev_dax;
- err_dax:
- if (dev_dax->id >= 0)
- ida_simple_remove(&dax_region->ida, dev_dax->id);
- err_id:
+ err:
kfree(dev_dax);
return ERR_PTR(rc);